What is the approved material for roof flashing according to the KY State Plumbing code?

The approved material for roof flashing according to the Kentucky State Plumbing Code is copper. Copper is highly durable, resistant to corrosion, and has a long lifespan, making it a preferred choice for roof flashing. It effectively directs water away from the seams and joints of a roof, preventing leaks and water damage. Furthermore, it also withstands extreme weather conditions, which is essential for maintaining the integrity of roofing systems.

Steel, while a potential material for a variety of applications, may be prone to rust and corrosion if not properly treated or galvanized, and therefore is not favored for roofing applications where longevity and resilience are crucial. Polyethylene and plastic, although versatile and lightweight materials, do not provide the same level of strength and durability associated with copper and may not be suitable for high-stress environments like roofing where weather resistance and structural integrity are essential.